Function operating device for an electric typewriter



2 Sheets-Sheet l INVENTOR.

SALTO Wfvffr R. SALTO FUNCTION OPERATING DEVICE FOR AN ELECTRIC TYPEWRITER Filed July 26, 1965 mNALDo BY 92M,

AGENT Aug. 29, 967 R. SALTO 3,338,368

FUNCTION OPERATING DEVICE FOR AN ELECTRIC TYPEWRITER Filed July 26, 1965 2 Sheets-Sheet 3 INVENTOR.

RINALDO SALTO United States Patent O 3,338,368 FUNCTION OPERATING DEVICE FOR AN ELECTRIC TYPEWRITER Rinaldo Salto, Ivrea (Turin), Italy, assignor to Ing. C.

Olivetti & C., S.p.A., Ivrea, Italy, a corporation of 5 Italy Filed July 26, 1965, Ser. No. 474,678 Claims priority, application Italy, Aug. 1, 1964, 17,129/ 64 14 Claims. (Cl. 19717) ABSTRACT OF 'I'HE DISCLOSURE This invention relates Ito a function operating device for an electric typewriter having a transversely traveling carriage normally controlled by an escapement device, `a power driven carriage return mechanism, and a tabulating mechanism, said operating device comprising a common member adapted to operate either said return mechanism or said tabulating mechanism at the depression of a carriage return key, and a tabulating key respectively.

There are already known typewriters wherein two or more functions are operable by la power operated cornmon member. Since the carri-age return mechanism as well as the tabulating mechanism need to remain operated till termination of the carriage stroke, two different locking devices are required thereby. These locking devices are disabled upon termination of said stroke irrespective of the power control, whereby these typewriters have the disadvantage that the carriage returns suddenly under the control of the escapement mechanism, when it is not yet fully and accurately at rest.

It is also known a typewriter having a single mechanism, namely the tabulating mechanism, operated by a two-step cyclic cam. Since different means are provided for operating the carriage return mechanism, this typewriter is relatively intricate and expensive to manufacture.

These disadvantages are obviated by the function operating device according to the invention, which is characterized in that said common member is operated by a two-step cyclic cam conditionable for effecting a rst step at the depression of each one of said keys, control means being provided for causing said ca-m to effect a second step upon termination of the carriage stroke for restoring said common member together with the operated mechanism.

This and other characteristics of the invention will become apparent from the following description of a preferred embodiment thereof an-d from the accompanying drawings, wherein:

FIG. l is a right hand longitudinal partial sectional view of 'an electric typewriter embodying a function operating device according to the invention;

FIG. 2 is a partial plan view of the machine of FIG. 1; and

lFIG. 3 is a partial sectional view taken on the line III-III of FIG. 1.

The function operating device is embodied in an electric typewriter comprising a continuously rotating main shaft 6 (FIG. l) adapted to operate the various mechlanisms of the typewriter. The shaft 6 is rotated counterclockwise by an electric motor not shown in the drawings. -The typewriter is provided wit-h a conventional transversely traveling paper carriage 81 adapted to be letter spaced under the control of an escapement device generically indicated by the numeral 94, which normally engages a rack secured to the carriage 81.

The function operating device -comprises a clutch 7, 8 formed of a ratchet wheel 7 secured to the shaft 6 and of a pawl 8 fulcrumed on a pivot 9 carried by a two-step cyclic cam 11 rotatably mounted on the shaft 6. A common member or bail 54 fulcrumed on a stationary shaft 56 is provided with a first arm 57 normally urged by a spring 58 to Contact the cam 11 and with a second arm 126 connected through a link 125 with a lever 123 fulcrumed at 124. A bail 119 pivoted on a stationary shaft is normally urged by a spring 121 to contact a pin 122 of the lever 123.

Pivoted on the shaft 6 is also a lever 12 having an arm 23 provided with a pin 14 engaging a cam slot 16 of the pawl 8. A spring 13 tensioned between the lever 12 and the pawl 8 normally urges a lug 18 of the lever 12 to contact an end 19 of a lever 21 fulcrumed on a stationary shaft 22 and it urges the pivot 9 to contact the arm 23 of the lever 12, whereby the pin 14 holds the pawl 8 disengaged from the wheel 7 and the cam 11 is placed at rest. In turn the lever 21 is urged by a spring 24 to contact a stationary pin 26 and is connected through a link 27 to an arm 28 of a bail 29 fulcrumed on a stationary shaft 31.

The lever 12 is provided with another arm 103 adapted to cooperate with an element or lug 102 of a lever 99 fulcrumed on a stationary shaft 101. The lever 99 is provided with a projection 98 normally urged by a spring 97 to contacta lug 96 of an intermediate member or bail 86 fulcrumed on a stationary shaft 87. The bail 86 is urged by a spring 91 prevailing over the spring 97 to contact a stationary pin 92, and it is provided with an arm 93 adapted to cooperate with the escapement device 94 for disengaging it from the carriage rack 95.

The typewriter is provided with a carriage return key 32 secured to a lever 3.3 fulcrumed at 34 and normally urged by a spring 36 to con-tact a. stationary pin 37. The lever 33 is provided with a pin 38 adapted to engage a projection. 39 of the lbail 29 and with an arm 41 connected through a link 42 to a lever 43. This latter is fulcrumed on ya stationary shaft 44 and it is adapted to engage a projection 45 (FIG. 2) of a lever 46 fulcrumed on a pivot 47 of a lever 48. A spring 49 tensioned between the levers 46 and 48 normally urges the lever 46 to contact a pin 51 secured to the lever 48. The lever 46 is .also provided with another projection 52 adapted to be moved into the path of an arm 53 of the bail 54, but it is normally placed out of said path.

The lever 48 is pivoted on a stationary pivot 59 and it is provided with an arm 60 normally contacted by a bail 61 adapted to operate a carriage return mechanism comprising a conventional friction clutch 62. This clutch when engaged causes the shaft 6 to rotate a pulley 63, which by winding a draw band not shown in the drawings returns the carriage 81 (FIG. l) rightwards and line spaces the platen in a manner known per se.

The lever 48 (FIG. 2)v is provided with a slot 64 engaged by an arm of a lever 66 (FIG. l) pivoted on the shaft 44 and provided with a pivot 67 pivotally mounting a pawl 68. This latter is provided with a projection 82 normally urged by a spring 8f3 to contact a lug 84 of the 'bail 86 and with a shoulder 88 adapted to engage the lower edge of the lug 84. Furthermorathe pawl 68 is connected through a link 69 to a horizontal lever 70 (FIG. 2) fulcrumed on a pivot 71. The lever 70 is provided lwith a lug 72 adapted to cooperate with a projection 73 of a carriage return counterstop 74 slidably mounted on a square shaft 76 and normally urged leftwa'rds by a cornpression spring 160. The counterstop 74 is provid-ed with another projection 77 adapted to cooperate with a projection 78 of a conventional left hand margin stop 79' -variably settable on another rack 80 secured to the carriage 81 (FIG. 1).

The typewriter is also provided with a tabulating key 104 secured to a stem 105 pin and slot connected with a lever 106 pivoted on the shaft 31. A projection 10-7 of the lever 106 is adapted to engage Athe bail 29, but it is normally distanced therefrom by the action of a spring 108 urging the key 104 to its upper position. The lever 106 is linked with a slide 109 having a projection 110 normally ycontacting a lug 111 of a lever 112 fulcrumed on a stationary shaft 113. The lever 112 is adapted to control a tabulating mechanism comprising 'a pawl 116 having a shoulder 118 adapted t-o cooperate with the bail 119 Ibut normally out of the path thereof. The pawl 116 is pivoted at 163 on a lever 117 and it is normally urged by a spring 115 to contact a lug 114 of the lever 112.

The lever 117 is fulcrumed on the shaft 113 and is yielidably connected with a tabulating counterstop 131. More particularly, the counterstop 131 (FIG. 3) is provided with a projection 129 urged by a spring 128 to contact a projection 127 of the lever 117. The counterstop 131 is guided upwards into a slot 132 of a horizontal slide 133 (FIG. 2) slidably mounted on two stationary pins 134 and 135. The upper end of the counterstop 131 (FIG. 3) is provided with a shoulder 136 adapted to be raised for cooperating with a plurality of settable tabulating stops 137 (FIG. 1) slidably mounted on a conventional tabulating `bar 138 secured to the carriage 81. Furthermore the upper end of the -counterstop 131 (FIG. 3) is provided with a tapered rear edge 139 engageable by the stops 137 for preventing damages in the case the carriage is returned while the counterstop 131 is raised.

'I'he slide 132 is also provided with a shoulder 140 (FIG. 2) cooperating with a projection 161 (FIG. 3) of a lever 141 fulcrumed on a pivot 142. A spring 143 normally urges the lever 141 clockwise and the slide 133 to contact the pin 134 (FIG. 2). Fulcrumed on a pivot 145 (FIG. 1) of the lever 117 is another pawl 146, an end 144 of which is normally urged by a spring 147 to contact a second projection 162 (FIG. 3) of the lever 141. Another end 148 (FIG. 1) of the pawl 146 is adapted to cooperate with a lug 149 of the bail 86.

The typewriter is also provided with a reverse tabulating device comprising a manually operable member or slide 156 slidably mounted on the shafts 22 and 101 and normally urged by a spring 157 to contact the shaft 22. The slide 156 is provided with a projection 158 adapted to cooperate with a pin 159 secured to the lever 99. The slide 156 is also provi-ded with a shoulder 154 adapted to be engaged by an interponent formed of a lug 152 of a link 151 pivoted at 155 on the lever 106. A spring 153 urges the lug 152 to Contact the cam 11, whereby the lug 152 is always controlled by this cam.

The function operating device operates as follows.

At the depression of the carriage return key 32 the arm 41 of the lever 33 through the link 42 rocks the lever 43 counterclockwise. The lever 43 engages the projection 45 (FIG. 2) of the lever 46 which is thus rocked counterclockwise and places its projection 52 on the path of the arm 53 of the bail 54. In turn the pin 38 (FIG. 1) of the lever 33 rocks the bail 29 clockwise and through the link 27 rocks the lever 31 counterclockwise. The lug 18 of the lever 12 is thus released and the spring 13, by slightly rocking the lever 12 counterclockwise, causes the pin 14 to engage the pawl 8 with the wheel 7.

The clutch 7, 8 is thus engaged and causes the cam 11 to be rotated by the shaft 6. Now the cam 11 rocks the bail 54 clockwise and the arm 53 engages the projection 52 (FIG. 2) of the lever 46, thus rocking the lever 48 clockwise. The arm 60 of the lever 48 through the bail 61 engages the friction clutch 62, whereby the carriage return mechanism is operated.

Furthermore the lever 48 rocks the lever 66 (FIG. 1) counterclockwise, thus displacing the pawl 68 upwards. Then the shoulder 88 of the pawl 68 engages the lug 84 of the bail 86, which is rocked clockwise. Now the arm 93 of the bail 86 disengages the escapement device 94 from the rack 95, whereby the carriage return is not affected by the device 94. In turn the lug 96 of the bail 86 causes the spring 97 to rock the lever 99 counterclockwise, whereby the lug 102 is located into the path of the arm 103 of the lever 12. This latter is thus arrested after being rotated counterclockwise a rst step, namely degrees, whereby the clutch 7, 8 is temporarily disengaged. The cam 11, which is arrested together with the lever 12 after said first step, holds the bail 54 and therefore the carriage return mechanism in the operated position. The carriage return key 32 may be now released, whereby the lever 21 is restored and its end 19 is returned on the path of the lug 18 of the lever 12.

The carriage return stroke terminates when the projection 78 of the left hand margin stop 79 (FIG. 2) encounters the projection 77 of the counterstop 74. Then the counterstop 74 is displaced rightwards along the shaft 76 and by compressing the spring 160 reduces the carriage speed before definitely arresting same. In turn the projection 73 of the counterstop 74 engages the lug 72 of the lever 70, which is now rocked clockwise and displaces the link 69 rearwards. The pawl 68 (FIG. l) is thus rocked counterclockwise and releases the bail 86 which is restored counterclockwise by the spring 91. Then the bail 86 on one hand causes'the escapement device 94 to engage again the carriage rack 95, on the other hand by means of its lug 96 restores the lever 99 clockwise.

Now the lug 102 releases the arm 103 of the lever 12 and causes the clutch 7, 8 to be engaged again to rotate the cam 11 through a further 270 degrees, thus effecting a second step. The clutch 7, 8 is definitely disengaged when the lug 18 of the lever 12 is arrested by the end 19 of the lever 21, that is upon completion of the one revolution cycle. During this second step of the cam 11, the spring 58 restores the hail 54 under the control of the cam 11. The lever 48 (FIG. 2) thus causes the friction clutch 62 to be disengaged with a predetermined delay with respect to the termination of the return carriage stroke depending from the shape of the cam 11 (FIG. 1). The draw of the carriage is thus disabled when the carriage rack has been reengaged by the escapement device 94, and therefore has been fully and accurately positioned.

On the contrary, when the tabulating key 104 is depressed, the stem 105 rocks the lever 106 clockwise. The slide 109 is thus displaced 'forwards and through its projection 110 rocks the lever 112 clockwise thus causing the pawl 116 to place its shoulder 118 on the path of the bail 119. Furthermore, the lever 106 displaces rearwards the link 151, but since the cam 11 holds the lug 152 below the shoulder 154, the lug 152 does not aiect the slide 156.

The cam 11 is now rotated a rst step and, through the bail 54, the link 125, and the lever 123, causes the bail 119 to move upwards the pawl 116, thus rocking the lever 117 counterclockwise and additionally tensioning the spring 115. Then the lever 117 on one hand causes the spring 128 (FIG. 3) to raise the counterstop 131 thus placing the shoulder 136 into the path of the set tabulating stops 137 shown by broken lines in FIG. 1.

On the other hand the lever 117 displaces the pawl 146 forwards, whereby the end 148 engages the lug 149 and rocks the bail 86 clockwise in a manner similar to the carriage return. Therefore the arm 93 of the bail 86 disables the escapement device 94, whereby the carriage 81 is moved leftwards by its spring not shown in the drawings, while the lug 96 of the bail 86 causes the lever 99 to locate the lug 102 into the path of the arm 103 of the lever 12 which is thus arrested together with the cam 11. Now the key 104 may he released and it is restored by the spring 108 together with the lever 106, while the spring 24 restores the lever 21. On the contrary, the pawl 116, due to the frictional contact with the bail 119, remains engaged by the bail 119, and the spring 115 remains partially tensioned. Therefore, the cam 11 through the bails 54 and 119 holds the tabulating mechanism in the operated position.

The tabulating carriage stroke terminates when a set tabulating stop 137 encounters the shoulder 136 (FIG. 3) of the counterstop 131. Then the counterstop 131 is -displaced leftwards together with the slide 133, which through its shoulder 140 rocks the lever 141 counterclockwise. In turn the lever 141 through its projection 162 rocks the pawl 146 (FIG. 1) clockwise, thus releasing the bail 86, which is restored by the spring 91 and causes the escapement device 94 to reengage the carriage rack 95, while the lever 99 causes the yclutch 7, 8 to be engaged and to rock the cam 11 through a second step in a manner similar to the carriage return termination. During this second step of the cam 11 the bail 119 becomes restored counterclockwise by its spring 58 and in turn allows the restoration of t-he bail 119 by its spring 121, so that consequently the pawl 116 under the influence of its weight and the spring 115 will automatically lassume its normal position seen in 'FIGURE 1. The restoration of the pawl 116 and therefore the restoration of the tabulating mechanism is effected under the control of the cam 11 with a predetermined delay with respect to the termination of the tabulating carriage stroke.

It is thus clear that the common member 54 is operated by the two-step cyclic cam 11, which is conditionable for effecting a first step at the depression ofthe carriage return key 32, as well as at the depression of the tabulating key 104, and that the control means 86, 99 are adapted to cause the cam 11 to effect a second step upon termination of the carriage stroke for restoring the member 54 together with either the operated carriage return mechanism or the operated tabulating mechanism.

The reverse tabulation may be effected by previously depressing the carriage return key 32 and then, when the `carriage has passed the required column position, by depressing the tabulating key 104. Upon the depression of the key 32 the clutch 7, 8 rotates the cam 11 through its first step and it is disengaged by the lug 102 of the lever 99. Then the cam 11 causes the lug 152 to be raised by the spring 153 and to be placed in front of the shoulder 154 of the slide 156. Now, if the key 104 is depressed while the carriage 81 is returning, the lever 106 is rocked clockwise and displaces the link 151 rearwards. The lug 152 of the link 151 engages the shoulder 154 of the slide `156, which is thus -deplaced rearward, whereby its projection 158 engages the pin 159 of the lever 99, which is restored clockwise. The clutch 7, Sis thus reengaged to cause the cam 11 to effect the second step irrespective of the termination of the carriage return stroke, thus breaking the carriage return.

Since at the depression of the key 104 the projection 107 of the lever 106 rotates the bail 29 clockwise, the lever 21 does not arrest the lug 18 -at the end of the cycle pertaining to the carriage return. Therefore, a new cycle of the clutch 7, 8 and the cam 11, pertaining to the carriage tabulation is effected. Now the subsequent carriage tabulating stroke will be arrested in the column having the rst set stop 137 (FIG. 3) at right of the counterstop 131.

In the case the key 104 (FIG. 1) is depressed when the carriage 81 is returning and the counterstop 131 (FIG. 3) is close to a set stop 137, this latter engages the tapered edge 139 of the counterstop 131, which is temporarily depressed and therefore rendered ineffective. The stop 137 can thus pass to right of the counterstop 131.

It is intended that modifications and improvements may be made to the described function operating device Without departing from the scope of the invention. For eX- ample the link 151 may be connected to a key other than the tabulating key, whereby the carriage return stroke may be broken and the carriage denitely arrested without subsequently operating the tabulating mechanism.

What I claim is:

1. In an electric typewriter having a transversely traveling carriage normally controlled by an escapement idevice, a power driven carriage return mechanism, a carriage return key, a tabulating mechanism, and a tabulating key, a function operating device comprising in combination:

(a) a cyclically operable common member,

(b) first means controlled by said return key for causing said member to operate said return mechanism,

(c) second means controlled by said tabulating key for causing said member to operate said tabulating mechanism,

(d) a two-step cyclic cam for operating said member, said cam being conditionable for effecting a first step at the depression of each one of said keys,

(e) and control means adapted to be driven upon termination of the carriage stroke for causing said cam to effect a second step for restoring said member together with the operated mechanism.

2. In an-electric typewriter having a transversely traveling carriage normally controlled by an escapement device, a power driven return mechanism, a carriage return key, a tabulating mechanism, and a tabulating key, a function operating device comprising in combination:

(a) a cyclically operable common member,

(b) an intermediate member operable for disengaging .said escapement device from said carriage,

(c) first means controlled by said return key for causing said common member to operate said return mechanism and said intermediate member,

(d) second means controlled by said tabulating key for causing said common member to operate said tabulating mechanism and said intermediate member,

(e) a two-step cyclic cam for operating said common member, said cam being lconditionable for effecting a first step at the depression of each one of said keys,

(f) and control means adapted to be driven upon termination of the carriage stroke for causing said intermediate member to reengage said escapement device with said carriage and to condition said cam for effecting a second step, whereby said common member and the operated mechanism are restored with a predetermined delay with respect to said termination.

3. In an electric typewriter having a transversely traveling carriage normally controlled by an escapement device, a power driven carriage return mechanism, a carriage return key, a tabulating mechanism, and a tabulating key, a function operating device comprising in combination:

(a) a cyclically operable common member,

(b) rst means controlled by said return key for causing said member to operate said return mechanism,

(c) second means controlled by said tabulating key for causing said member to operate said tabulating mechanism,

(d) a two-step cyclic cam for operating said member,

(e) a clutch adapted to be engaged for cyclically rotating said cam,

(f) means operable at the depression of each one of said keys for engaging said clutch,

(g) a normally ineffective element adapted to be rendered effective by the operated mechanism for disengaging said clutch upon having rotated said cam through a -frst step,

(h) and control means adapted to be driven upon termination of the carriage stroke for disabling said element, thus causing said clutch to be reengaged and to rotate said cam through a second step.

4. In an electric typewriter having a transversely traveling carriage normally controlled by an escapement device, a power `driven carriage return mechanism, a carriage return key, a tabulating mechanism, and a tabulating 7 key, .a function operating device comprising in combination:

(1a) a cyclically operable common member,

(b) an intermediate member operable for disengaging said escapement device from said carriage,

(c) rst means controlled by said return key for causing said common member to operate said return mechanism and said intermediate member,

(d) second means controlled by said tabulating key for causing said common member to operate said tabulating mechanism and said intermediate member,

(e) `a two-step cyclic cam for operating said common member,

(f) a clutch adapted to be engaged for cyclically rotating said cam,

(g) means operable at the depression of each one of said keys for engaging said clutch,

(h) a normally ineffective element adapted to be rendered effective by said intermediate member when 4operated for disengaging said clutch upon having rotated said cam through a rst step,

(i) and control means adapted to be driven upon termination of the carriage stroke for causing said intermediate member to reengage said escapement device and to disable said element, thus causing said clutch to be reengaged and to rotate said cam through a second step, whereby said common member and the operated mechanism are restored with a predetermined delay with respect to said termination.

S. In an electric typewriter having a transversely traveling carriage normally controlled by `an escapement device, a power driven carriage return mechanism, and a carriage return key, a function operating device comprising in combination:

(a) ya two-step cyclic cam conditionable for ettecting a first step at the depression of said key,

(b) means controlled by said key for causing said carn to operate said mechanism,

(c) control means adapted to be driven upon termination of the carriage stroke for causing said cam to effect a second step for restoring said mechanism,

(d) and a manually operable member for conditioning said cam to effect said second step irrespective of said termination, thus breaking said stroke.

6. In an electric typewriter having a transversely traveling carriage norm-ally controlled by an escapement device, a power driven carriage return mechanism, and a carriage return key, a function operating device comprising in combination:

(a) a two-step cyclic cam conditionable for eecting a rst step at the depression Iof said key,

(b) an intermediate member operable for disabling said escapement device from said carriage,

(c) means controlled by said key for causing said cam to operate said mechanism and said member,

(d) control means adapted to be driven upon termination of t-he carriage stroke for causing said member to reengage said escapement device and to condition said cam for eecting a second step, whereby said mechanism is restored with a predetermined delay with respect to said termination,

(e) and a manually operable member for conditioning `said cam to eiect said second step irrespective of said termination, thus breaking said stroke.

7. In an electric typewrite-r having a transversely traveling carriage normally controlled by an escapement device, a power driven carriage return mechanism, land a carriage return key, a function oper-ating device cornprising in combination:

(a) a two-step cyclic cam,

(b) a clutch adapted to be engaged for cyclically rotating said cam,

(c) means operable at the depression `of said key for engaging said clutch,

(d) means controlled by said key for causing said cam to operate said mechanism,

(e) a normally ineiective element adapted to be rendered effective by said mechanism when operated for disengaging `said clutch upon having rotated said cam through a first step,

(f) control means adapted to be driven upon termination of the carriage stroke for disabling said element thus causing said clutch to be reengaged and to rotate said cam through a second step,

(g) and a manually operable member for disabling said element irrespective of said termination, thus breaking said stroke.

8. In an electric typewriter having a transversely traveling carriage normally controlled by an escapement device, a power driven carriage return mechanism, and a carriage return key, a function Voperating device comprising in combination:

(a) a two-step cyclic cam,

('b) a clutch adapted to be engaged for cyclically rotating said cam,

(c) means operable at the depression of said key for engaging said clutch,

(d) an intermediate member operable for disabling said escapement device from said carriage,

(e) means controlled by said key for causing said cam to operate said mechanism and said member,

(f) a normally ineifective element adapted to be `rendered eiective by said member when operated for disengaging said clutch upon Ihaving rotated said cam thro-ugh a rst step,

(g) control means adapted to be driven upon termination of the carriage stroke for causing said member to reengage said escapement device and to disable said element, thus causing said clutch to be reengaged and to rotate said cam through a second step,

(h) and a manually operable member for disabling said element irrespective of said termination, thus breaking said stroke.

9. In an electric typewriter having a transversely traveling carriage normally controlled `by an escapement device, a power driven carriage return mechanism, a carriage return key, a tabulating mechanism, and a tabulating key, a lfunction operating device comprising in combination:

(a) a cyclically operable common member,

(b) iirst means controlled by said return key for causing said member to operate said return mechanism,

(c) second means controlled by said tabulating key for causing said member to operate said tabulating mechanism,

(d) a two-step cyclic cam for operating said member, said cam being conditionable for effecting a rst step at the depression of each one of said keys,

(e) control means adapted to be driven upon termination of the carriage stroke for causing said cam to effect a second step for restoring said member together with the operated mechanism,

(t) and means opera-ble at the depression of said tabulating key when said return mechanism is operated for conditioning said cam rst to effect a second step irrespective of the termination of the carriage return stroke thus restoring said return mechanism and then to effect again said rst step to operate said tabulating mechanism.

10. In an electric typewriter having a transversely traveling carriage normally controlled by an escapement device, a power driven carriage mechanism, a carriage return key, a tabulating mechanism, and a tabulating key, a function operating device comprising in combination:

(a) a cyclically operable common member,

(b) an intermediate member operable yfor disabling said escapement device from said carriage,

(c) rst means controlled by said return key for causing said common member to operate said return mechanism and said intermediate member,

(d) second means controlled Iby said tabulating key for causing said common member to operate said tabulating mechanism and said intermediate member,

(e) a two-step cyclic cam for operating said common member, said cam being conditionable for effecting a first step at the depression of each one of said keys,

(f) control means adapted to be driven upon termination of the carriage stroke for causing said intermediate member to reengage said escapement device with said carriage and for conditioning said cam to effect a second step, whereby said common member and the operated mechanism are restored with a predetermined delay with respect to said termination,

(g) and means operable at the depression of said tabulating key when said return mechanism is operated for conditioning said cam rst to effect a second step irrespective of the termination of the carriage return stroke thus restoring said return mechanism and then to effect again said first step to operate said tabulating mechanism.

11. In an electric typewriter having a transversely traveling carriage normally controlled by an escapement device, a power driven carriage return mechanism, a carriage return key, a tabulating mechanism, and a tabulating key, a function operating device comprising in cornbination:

(a) a cyclically operable common member,

(b) rst means controlled by said return key -for causing said member to operate said return mechanism,

(c) second means controlled by said tabulating key for causing said member to operate said tabulating mechanism,

(d) a two-step cyclic cam for operating said member,

(e) a clutch adapted to be engaged for cyclically rotating said cam,

(f) means operable at the depression of each one of said keys for engaging said clutch,

(g) a normally ineffective element adapted to be rendered effective by the operated mechanism for disengagiug said clutch upon having rotated said cam through a first step,

(h) control means adapted to be driven upon termination of the carriage stroke for disabling said element thus causing said clutch to be reengaged and to rotate said cam through a second step,

(i) and means operable at the depression of said tabulating key when said return mechanism is operated for conditioning said cam first to eifect a second step irrespective of the termination of the carriage return stroke thus restoring said return mechanism and then to effect again said rst step to operate said tabulating mechanism.

12. In an electric typewriter having a transversely traveling carriage normally controlled by an escapement device, a power driven carriage return mechanism, a carriage return key, a tabulating mechanism, and a tabulating key, a function operating device comprising in combination:

(a) a cyclically operable common member,

(b) first means controlled by said return key for causing said member to operate said return mechanism,

(c) second means controlled by said tabulating key -for causing said member to operate said tabulating mechanism,

(d) a two-step cyclic cam for operating said member, said cam being conditionable for effecting a first step at the depression of each one of said keys,

(e) control means adapted to be driven upon termination of the carriage stroke for causing said cam to effect a second step for restoring said member together with the operated mechanism,

(f) a further member operable for conditioning said cam to effect said second step irrespective of said termination,

(g) and an interponent connected to said tabulating key and controlled by said cam for operating said further member in the case said tabulating key is depressed when said return mechanism is operated.

13. In an electric typewriter having .a transversely traveling carriage normally controlled by an escapement device, a power driven carriage return mechanism, a carriage return key, a tabulating mechanism, and a tabulating key, a function operating device comprising in combination:

(a) a cyclically operable common member,

(b) an intermediate member operable for disabling said escapement device from said carriage,

(c) rst means Controlled by said return key for causing said common member to operate said return mechanism and said intermediate member,

(d) second means controlled by said tabulating -key lfor causing said common member to operate said tabulating mechanism and said intermediate member,

(e) a two-step cyclic cam for operating said common member,

(f) a clutch adapted to be engaged for cyclically rotating said cam,

(g) means operable at the depression of each one of said keys for engaging said clutch,

(h) a normally ineffective element adapted to be rendered effective by said intermediate member when operated for disengaging said clutch upon having rotated said cam through a first step,

(i) control means adapted to be driven upon termination of the carriage stroke for causing said intermediate member to reengage said escapement device and to disable said element, thus causing said clutch to be reengaged and to rotate said cam through a second step, whereby said common member and the operated mechanism are restored with .a predetermined delay with respect to said termination,

(j) a further member operable for disabling said element irrespective of said termination,

(k) and an interponent connected to said tabulating key and controlled by said cam for operating said further member in the case said tabulating key is depressed when said return mechanism is operated.

14. In an electric typewriter having a transversely traveling carriage normally controlled by an escapement device, a power driven carriage return mechanism, a carriage return key, a tabulating mechanism, and a tabulating key, a function operating device comprising in combination:

(a) a cyclically operable common member,

(b) a two-step cyclic cam for operating said common member,

(c) first means controlled by said return key for causing a rst step of said cam and causing said member to render said return mechanism active,

(d) a carriage return counterstop adapted to be operated upon termination of the carriage return stroke for conditioning said cam to effect a second step for restoring said member and rendering said return mechanism inactive,

(e) second means controlled by said tabulating key for causing a first step of said cam and causing said member to operate said tabulating mechanism,

(f) a plurality of settable tabulating stops,

(g) a tabulating counterstop yieldably connected to said tabulating mechanism and adapted to be operated by a set one of said tabulating stops for conditioning said cam to eifect a second step for restoring said member and rendering said tabulating mechanism inactive,

(h) a further member operable for conditioning said cam to effect said second step irrespective of said termination,

(i) an interponent connected to said tabulating key and controlled by said cam for operating said further 11 12 member in the case said tabulating key is depressed 1,688,380 10/ 1928 Dorsey 197-17 when said return mechanism is active, 1,824,099 9/1931 .Pitman 197 176 (j) and a tapered rear edve on said tabulating countestop adapted to be engged by said tabulating stops 1945895 2/1934 Hart 197 17 X for causing said tabulating counterstop to be tempo- 5 1,973,314 9/1934 Hart 197-17 X rarily rendered ineffective in the case said tabulating 2,066,979 1/ 1937 KoCa 197-176 key is depressed when said carriage is returning and 2,478,630 8/ 1949 Hill 197-179 X said tabulating counterstop is close to a set one off said 3,217,850 11/19-65 Frenchette et al. 197 17 X tabulatmg Stops' 3,263,049 3/1966 Krauss et a1. 197-11 References Cited 10 UNITED STATES PATENTS ROBERT E. PULFREY, Primary Examiner.

1,609,943 v 12/ 1926 Hart 197-65 E. T. WRIGHT, Assistant Examiner. 

1. IN AN ELECTRIC TYPEWRITER HAVING A TRANSVERSELY TRAVELING CARRIAGE NORMALLY CONTROLLED BY AN ESCAPEMENT DEVIDE, A POWER DRIVEN CARRIAGE RETURN MECHANISM, A CARRIAGE RETURN KEY, A TABULATING MECHANISM, AND A TUBULATING KEY, A FUNCTION OPERTING DEVICE COMPRISING A COMBINATION: (A) A CYCLICALLY OPERABLE COMMON MEMBER, (B) FIRST MEANS CONTROLLED BY SAID RETURN KEY FOR CAUSING SAID MEMBER TO OPERATE SAID RETURN MECHANISM, (C) SECOND MEANS CONTROLLED BY SAID TUBULATING KEY FOR CAUSING SAID MEMBER TO OPERATE SAID TABULATING MECHANISM, (D) A TWO-STEP CYCLIC CAM FOR OPERATING SAID MEMBER, SAID CAM BEING CONDITIONED FOR EFFECTING A FIRST STEP AT THE DEPRESSION OF EACH ONE OF SAID KEYS, (E) AND CONTROL MEANS ADAPTED TO BE DRIVEN UPON TERMINATION OF THE CARRIAGE STROKE FOR CAUSING SAID CAM TO EFFECT A SECOND STEP FOR RESTORING SAID MEMBER TOGETHER WITH THE OPERATED MECHANISM. 